

igntion timing ? i have advanced the igntion timing to get more preformance does it make this ?DCmk3 wrote:Sounds like an extremely lean mixture and possibly a bad timing setting.
yes i use 6 heat rangeFran wrote:Are you using the correct heat range plugs?
what's the lean mixture ?Torker wrote:Common causes of spark-plugs melting:
Heat range of the plugs too hot
Lean mixture
Timing too far advanced
Cooling system not working properly
Oil flow problems in the head leading to heat built-up
Factors above will contribute to excessive heat and/or detonation, can affect the pistons too if not resolved...
Not enough fuel going into the motor.a1aa1992 wrote:what's the lean mixture ?Torker wrote:Common causes of spark-plugs melting:
Heat range of the plugs too hot
Lean mixture
Timing too far advanced
Cooling system not working properly
Oil flow problems in the head leading to heat built-up
Factors above will contribute to excessive heat and/or detonation, can affect the pistons too if not resolved...
Christo, maybe we should just elaborate some more when replying to our "North African cousin", in the sense of explaining that an engine needs x parts fuel and y parts air. The OP is from Egypt and his English is not that hot. (Much better than my Arabic though... as I found out when visiting Cairo in 1997...Torker wrote:Not enough fuel going into the motor.a1aa1992 wrote:what's the lean mixture ?Torker wrote:Common causes of spark-plugs melting:
Heat range of the plugs too hot
Lean mixture
Timing too far advanced
Cooling system not working properly
Oil flow problems in the head leading to heat built-up
Factors above will contribute to excessive heat and/or detonation, can affect the pistons too if not resolved...
when i check the fuel pump i got 3bar of fuel press i think that's enough for the 2E injectors but the engine was not working does the engine need the 3bar of press to 6 Rpm it maybe that 3 bar get low at high rpm so if the press get low at high rpm do this knocking ? i'm sorry for my bad english but i'm trying to connect with uTorker wrote:Not enough fuel going into the motor.a1aa1992 wrote:what's the lean mixture ?Torker wrote:Common causes of spark-plugs melting:
Heat range of the plugs too hot
Lean mixture
Timing too far advanced
Cooling system not working properly
Oil flow problems in the head leading to heat built-up
Factors above will contribute to excessive heat and/or detonation, can affect the pistons too if not resolved...
The fuel pump must be able to maintain 3 bar pressure over the entire rpm range under load, if you suspect it's not keeping up look at upgrading the pump. What pump are you using at the moment?a1aa1992 wrote:when i check the fuel pump i got 3bar of fuel press i think that's enough for the 2E injectors but the engine was not working does the engine need the 3bar of press to 6 Rpm it maybe that 3 bar get low at high rpm so if the press get low at high rpm do this knocking ? i'm sorry for my bad english but i'm trying to connect with uTorker wrote:Not enough fuel going into the motor.a1aa1992 wrote:what's the lean mixture ?Torker wrote:Common causes of spark-plugs melting:
Heat range of the plugs too hot
Lean mixture
Timing too far advanced
Cooling system not working properly
Oil flow problems in the head leading to heat built-up
Factors above will contribute to excessive heat and/or detonation, can affect the pistons too if not resolved...
bosch external fuel pump 3barTorker wrote:The fuel pump must be able to maintain 3 bar pressure over the entire rpm range under load, if you suspect it's not keeping up look at upgrading the pump. What pump are you using at the moment?a1aa1992 wrote:when i check the fuel pump i got 3bar of fuel press i think that's enough for the 2E injectors but the engine was not working does the engine need the 3bar of press to 6 Rpm it maybe that 3 bar get low at high rpm so if the press get low at high rpm do this knocking ? i'm sorry for my bad english but i'm trying to connect with uTorker wrote:Not enough fuel going into the motor.a1aa1992 wrote: what's the lean mixture ?
Torker wrote:The fuel pump must be able to maintain 3 bar pressure over the entire rpm range under load, if you suspect it's not keeping up look at upgrading the pump. What pump are you using at the moment?a1aa1992 wrote:when i check the fuel pump i got 3bar of fuel press i think that's enough for the 2E injectors but the engine was not working does the engine need the 3bar of press to 6 Rpm it maybe that 3 bar get low at high rpm so if the press get low at high rpm do this knocking ? i'm sorry for my bad english but i'm trying to connect with uTorker wrote:Not enough fuel going into the motor.a1aa1992 wrote: what's the lean mixture ?
The pump itself should push between 5 and 6 bar and that gets regulated down to 3 bar.CCBB wrote:If I'm not mistaken, your fuel pump should be delivering 3.5bar of pressure and your fuel pressure regulator on your fuel rail should be regulating that down to a constant 3 bar.
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This is the problem here, he doesn't have access to proper diagnostic tools or a tuner with a Dyno, management is stock 2.0 MP9 it sounds like - he installed the motor, harness and management together...joggiep wrote:Guys please let us help this guy properly..
To do that the only real way would be to get it on a dyno. Retarding the timing might fix the immediate issue but how much. I can't see what management is used so that plays a role in what/how the ignition timing gets advanced or retarded by the management system.
Fuel pressure is also important.
What you need to understand is that what can and in all likelihood will kill a motor every time and quickly as well is knock or running lean when under load and at high rpm. This is exactly where you have the issue. Can you see/monitor the fuel pressure when you are driving the car on the road or the AFR's if you can not please get the car to someone that has a fuel pressure gauge, a AFR meter and a dyno so that you can see in a safe manner what is happening before you do any more damage to that motor.
I'm standing under correction on the MP9 part, it might be Digifant...joggiep wrote:Eish...
Not good then...Its a hit and miss affair at best and chances are that that motor will end up as coffee table in the near future.
You can retard it until it stops pinging even if you have a Fuel pressure issue but that will kill performance.
If it's MP9 it's just again a shining example of how utterly useless the knock sensor is.
EX-DOHCTOR wrote: I'd make sure I understand the differences between fish and engine components before attempting any modifications on my motor vehicle as a start.![]()
Psycho1400 wrote:It wasn't an oil leak, it was a horsepower sweat...